[CLUE-Tech] Perl Question

Tue Aug 5 16:28:17 MDT 2003

I am not quite sure I understand. I understand that some chars (like spaces) 
need encoding for the server and browser to recognize a valid URL/URI. But 
if the script is trying to encode a forward slash "/" for the sake of apache 
and the browser, it is doing no good. The browser tries to send the form 
data back to %2Fscriptdir%2Fscriptname.cgi and the server is chokeing on the 
URL. Here is an example of exactly what is happening:

Here is the code:
#!/usr/bin/perl
# CGI to illustrate anomaly

$|=1;
use CGI;

$q = new CGI;

print   $q->start_form,
	$q->popup_menu(-name=>'item',
			-values=>['one','two','three']),
	$q->submit('send','Send'),
	$q->end_form,
	"\n<hr>\n",
	$q->param('item'),
	"\n";

On RH 9... execute the following from the command line:
./form.cgi item=one
here is the output:

<form method="post" action="%2F.%2Fform.cgi" 
enctype="application/x-www-form-urlencoded">
<select name="item">
<option selected="selected" value="one">one</option>
<option value="two">two</option>
<option value="three">three</option>
</select><input type="submit" name="send" value="Send" /><div></div></form>
<hr>
one

On RH 7.3... execute the following command on the same code:
./form.cgi item=two
here is the output:

<form method="post" action="/./form.cgi" 
enctype="application/x-www-form-urlencoded">
<select name="item">
<option value="one">one</option>
<option selected="selected" value="two">two</option>
<option value="three">three</option>
</select><input type="submit" name="send" value="Send" /></form>
<hr>
two

notice the "action=.." tag is the only variable that got translated. How do 
I stop this?

----Original Message Follows----
From: Lynn Danielson <lynnd at techangle.com>
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Subject: Re: [CLUE-Tech] Perl Question
Date: Tue, 05 Aug 2003 15:17:06 -0600
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Jesse Flygare wrote:

>I am using RH 9 and just installed the CGI module from CPAN. I created a 
>simple form script and noticed that the CGI functions are converting 
>slashes (/) into hex (%2F) and it is messing up my scripts (for instance $0 
>will return the script name and path as .%2Fscript.cgi instead of 
>./script.cgi). Previous versions I have used do not do this. Does anyone 
>know what is going on? How can I stop this conversion?

That's standard cgi encoding.  Run your cgi functions on the form variables 
portion
of your url only and append t to your script name. --Lynn

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